Most sleep problems come down to a handful of fixable habits, and small changes can cut the time it takes you to fall asleep by 20 minutes or more. Adults need at least 7 hours per night (7 to 9 hours if you’re over 60, 7 to 8 if you’re over 65), but hitting that number depends on what you do during the day just as much as what you do at bedtime. Here’s what actually works.
Cool Your Bedroom to 60–67°F
Your body temperature naturally drops as you fall asleep, and a warm room fights that process. Keeping your bedroom between 60 and 67°F (15 to 19°C) supports the deeper, more restorative stages of sleep where your body does most of its repair work. If you can’t control your thermostat that precisely, a fan, lighter blankets, or breathable sheets get you close.
Cut Screens Two to Three Hours Before Bed
The blue light from phones, tablets, and laptops suppresses your body’s natural melatonin production, the hormone that signals it’s time to sleep. Harvard Health recommends avoiding bright screens starting two to three hours before bed. If that feels impossible, even one hour helps, and night mode or blue-light filters reduce the effect somewhat, though they don’t eliminate it entirely.
Watch Caffeine More Than You Think
A 2024 clinical trial published in the journal SLEEP found that 400 mg of caffeine (roughly two large coffees) can disrupt sleep when consumed within 12 hours of bedtime. That means your afternoon coffee at 2 p.m. could still affect your ability to fall asleep at midnight. Even a single small cup (about 100 mg) caused measurable problems when consumed less than four hours before bed. The closer to bedtime you drink it, the worse the effect gets.
If you’re a heavy coffee drinker struggling with sleep, try shifting your last cup to the morning for a week and see what changes.
Exercise Earlier in the Day
Regular physical activity is one of the most reliable ways to improve sleep quality, but timing matters. Vigorous exercise raises your core body temperature and keeps it elevated for hours, which can delay sleep onset. The general guideline is to finish any intense workout at least four hours before bedtime. Morning or early afternoon exercise tends to produce the best sleep benefits. Light stretching or a walk after dinner is fine and won’t interfere.
Try Sleep Restriction (It Sounds Backwards)
If you’ve been lying in bed for 9 hours but only sleeping for 6, your brain starts associating the bed with wakefulness. One of the most effective techniques for breaking this cycle is temporarily limiting your time in bed to match how much you’re actually sleeping. So if you’re only getting 6 hours of real sleep, you only allow yourself 6 hours in bed. This builds up enough sleep pressure that you fall asleep faster and stay asleep longer. Once your sleep becomes consistent, you gradually extend the window.
This approach is a core part of Cognitive Behavioral Therapy for Insomnia (CBT-I), which works for 7 to 8 out of 10 people who try it. Unlike sleep medications, which are designed for short-term use, CBT-I produces lasting results because it retrains your brain’s relationship with sleep. A trained therapist can guide you through it, and several app-based programs now offer structured CBT-I as well.
Other CBT-I Techniques Worth Trying
Beyond sleep restriction, CBT-I includes a few other strategies you can start using on your own:
- Stimulus control: Use your bed only for sleep. No scrolling, no reading, no watching TV in bed. If you’ve been lying awake for more than 15 to 20 minutes, get up and do something quiet in another room until you feel sleepy again. This retrains your brain to associate the bed with falling asleep, not with frustration.
- Cognitive reframing: Anxiety about not sleeping often makes insomnia worse. Noticing and challenging unhelpful thoughts (“I’ll never function tomorrow if I don’t fall asleep right now”) can break the cycle of stress that keeps you awake.
Foods That Support Sleep
Your body uses an amino acid called tryptophan to produce both melatonin and serotonin, two chemicals directly involved in regulating sleep. Foods naturally rich in tryptophan include turkey, chicken, fish, eggs, cheese, milk, pumpkin seeds, sunflower seeds, peanuts, and soybeans. Eating these as part of your evening meal gives your body the raw materials it needs. A heavy meal right before bed can backfire, though. Aim to finish eating two to three hours before you plan to sleep.
Does Melatonin Actually Work?
Melatonin supplements do help some people fall asleep faster, with the strongest evidence in people whose internal clock is shifted later than they’d like (a condition called delayed sleep phase disorder). A large meta-analysis found melatonin significantly reduced the time it took to fall asleep and increased total sleep time in these groups. It’s less clearly effective for general insomnia in people with normal circadian rhythms.
If you try melatonin, start with a low dose (0.5 to 1 mg) taken 30 to 60 minutes before bed. Many over-the-counter products contain 5 or 10 mg, which is far more than most people need and can cause grogginess the next day. Melatonin works best as a short-term reset, not a nightly crutch.
Build a Consistent Sleep Schedule
Your body’s internal clock thrives on predictability. Going to bed and waking up at the same time every day, including weekends, is one of the simplest and most powerful changes you can make. Sleeping in on Saturday morning feels good in the moment, but it shifts your internal clock later, making Sunday night miserable. Keeping your wake time consistent within a 30-minute window, even after a rough night, helps stabilize your sleep over time.
Signs Something Else Is Going On
Not all sleep problems respond to better habits. If you snore loudly (especially if your snoring is interrupted by periods of silence), wake up gasping or choking, or feel excessively drowsy during the day despite spending enough time in bed, you may have obstructive sleep apnea. In this condition, your airway repeatedly collapses during sleep, sometimes more than five times per hour, fragmenting your rest without you realizing it. A sleep study can diagnose it, and treatment typically improves energy and mood dramatically.